Year	Percent
1997-01-01	1.8350099999999998
1998-01-01	1.1342500000000000
1999-01-01	1.4096400000000000
2000-01-01	2.0757200000000000
2001-01-01	1.4514799999999999
2002-01-01	1.1204300000000000
2003-01-01	0.6532939999999999
2004-01-01	1.1734500000000000
2005-01-01	0.6417400000000000
2006-01-01	1.4271200000000002
2007-01-01	1.4707299999999999
2008-01-01	1.1380800000000000
2009-01-01	2.1165300000000000
2010-01-01	1.0704600000000000
2011-01-01	-3.3606500000000000
2012-01-01	0.8205680000000001
2013-01-01	1.2443300000000000
2014-01-01	0.9641049999999999
2015-01-01	1.1947600000000000
2016-01-01	2.1573500000000000